Ventilating device.



No. 836,315. v PATBNTED NOV. 20, 1906. N. L. PRIESE.

VENTILATING DEVICE.

APPLICATION PILBD HARM. 1906.

attaining UNITED STATES PATENT OFFICE.

NORMAN L. FRIESE, OF ROANOKE, VIRGINIA, ASSIGNOR TO AUTOMATIC VENTILATOR COMPANY, OF NEW YORK, N. Y., A CORPORATION OF N ENV YORK.

VENTILATING DEVICE Specification of Letters Patent.

Patented Nev. 2o, 190e.

Application filed March 12, 1906. Serial No. 305,619.

To @tl/f whom, t nca/y concern:

Be it known that I, NORMAN L. FRIESE, a citizen of the United States, residing at Roanoke, in the county of Roanoke and State of Virginia, have invented certain new and useful Improvements in Ventilating Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements in Ventilating devices of that class in which air is casued to contact with outside deflectors and to be forced through inlet-openings in the wall of the compartment, while at the same time a partial vacuum is produced behind the deflector and the vitiated air Withdrawn from the compartment through an opening in the wall thereof, as fully illustrated and described in Letters Patent No. 7 93,403, granted June 27, 1905, to Ross Taylor.

In the construction referred to the exterior deflector is secured to the wall of the car in fixed relation with and between openings through the Wall.

My invention has for its object to secure automatic adjustment of the exterior deiiector relatively with the openings in the wall of the car in order that when the car is moving in a given direction and fresh air is deflected into the opening in advance of the deflector the latter will be forced rearward to any desired or predetermined relation with the opening in the wall in rear of the deflector, s o that the partial vacuum induced at the rear of the deflector will more effectively operate to withdraw vitiated air from the compartment, and with these ends in view my invention consists in the combination and arrangement, with separated openings in the wall of the compartment to be ventilated, of an exterior deflector adapted to be automatically moved rearward to any desired locality by the air contacting with the deector, as will be hereinafter more fully explained.

In order that those skilled in the art to which my invention appertains may fully understand my invention, I will proceed to describe the construction, operation, and advantages of the same, referring by numerals to the accompanying drawings, in Which- Figure l is a side elevation of a portion of the roof-deck of an ordinary railroad-car with my improvement connected therewith. Fig. 2 is a section taken on line a b of Fig. 1, and Fig. 3 is a vertical section taken on the line c d of Fig. l.

Similar reference-numerals indicate like parts in the several figures of the drawings.

l represents a portion of the main roof of a car, and 2 the upper deck-roof supported y hereinbefore referred to; but instead of securing the exterior deflector in iixed relation with the two separated openings 4 in the Wall of the car said defiector is mounted upon parallel rods 8, secured in position by suitable straps or similar devices 9.

The base of the deiiector is provided with hollow or tubular bearings 10, through which the rods 8 pass and upon which the bearings and defiector are free to reciprocate accordingly as the car may be moving in either direction.

In lorder that the pressure exerted by the air upon the outer free end of the deflector may not tend to cause the bearings 8 to rock upon or bite the rods 8, said bearings are made of sufficient length to counteract such tendency.

11 representsadjustable stops designed to arrest the rearward movement of the deector at any predetermined or desired locality and they are secured in position upon the rods 8 by ordinary set-screws 12, and to provide for the parallel and simultaneous movement of the stops they are preferably connected by small stiff bars 13. I, however, do not wishto be confined to the use of stops upon both of the rods 8 or to their connection one with the other in the manner described, for under ordinary circumstances one stop upon either of the rods 8 may beef- IOO f ditions serve also to arrest the movement of the deflector when said fastening devices are properly located with reference to the desired extent of movement by the deector.

Means other than shown may be employed to secure the deflector in reciprocative relation with the openings 4 in the wall of the car without departing from the spirit of my invention, which consists, broadly, ofyan exterior deflector to be reciprocated by contact with the air in order that such deilector may be automatically adjusted with reference to such openings.

From the construction shown and described it will be readily understood that when the car is moving in the direction inj dicated by the arrow in Fig. 2 the pressure of the air against the front surface of the deilector will cause it to travel rearward toward the opening 4 behind it, ythus making the distance between said opening and the deflector less than the distance between said deiiector and the forward opening, and consequently the partial vacuum induced in rear of the deflector will be closer to the rear opening than would be the case were the deflector secured in fixed relation midway between the `openings in the wall of the car.

When the'car is moved in a direction opposite to that indicated and the conditions are accordingly reversed, the exterior deflector willin the manner already described be automatically shifted. to the desired position.

Having described the construction and operation of my improved Ventilating device and the advantages resulting from the use thereof, what I claimvas new, and desire to secure by Letters Patent, is-

l. The herein-described means for ventilating a car or other compartment consisting of adjacent, separated openings through the vertical wall, and an exterior automaticallyreciprocating deflector and means for arresting the movement of such deilector at predetermined localities, substantially as and for the purpose set forth.

2. In means for Ventilating a car or other compartment provided with adjacent and separated openings for the admission of fresh air and escape of vitiated air, an exterior deflector reciprocatively mounted upon parallel supporting-rods, and means for arresting the movement of such deflector at predetermined localities, substantially as hereinbefore set forth.

3. In means for ventilating a car or otherV N. L. FRIESE.

Witnesses:

D. EMFIELD, M. II. MARTIN. 

